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Thread: Opening a File for User

  1. #1
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    Default Opening a File for User

    Quick question.

    I'm writing a program that reads/writes Excel files and whatnot. When the program finishes, I will prompt the user, asking if they would like the Excel File to be opened for them.

    How can I open the file for the user?

    I know it's possible, but I cant get anything from google b/c everything I have tried searching just gives results concerning reading/writing files instead of actually opening them.


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    Default Re: Opening a File for User

    Do you mean open the file in excel? You can make a call to System.exec, or alternatively use the new Desktop (Java Platform SE 6) class and call Desktop.open (you should make sure the file has the appropriate extension so that it is recognizes as an excel file)

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    aussiemcgr (July 28th, 2010)

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    Default Re: Opening a File for User

    Fantastic. Exactly what I needed. Thanks copeg.

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    Default Re: Opening a File for User

    You could do something like this.

    It's just an example but a JOptionPane will popup with YES and NO. If you click YES, the file will open.

    		String fileName = "file.txt";
     
    		// File written. Open?
    		JOptionPane pane = new JOptionPane("file saved. Open file?");
    		Object[] options = new String[] { "YES", "NO" };
    		pane.setOptions(options);
    		JDialog dialog = pane.createDialog(new JFrame(), "File Saved");
    		dialog.show();
    		Object obj = pane.getValue();
     
    		int result = -1;
    		for (int k = 0; k < options.length; k++)
    			if (options[k].equals(obj)){
    				result = k;
    				String opt = Integer.toString(result);
    				// if YES
    				if(opt.equals("0")){
    					// Open file
    					Process p = Runtime.getRuntime().exec("cmd /c \""+fileName+"\"");			
    				}else{
    					// do nothing
    				}
    			}

    This opens the file:

    Process p = Runtime.getRuntime().exec("cmd /c \""+fileName+"\"");

    You will need to import:

    javax.swing.JOptionPane;
    javax.swing.JDialog;
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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